20801594

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2066

約数の個数: 24

約数和(自身を含む): 35112000

約数和(自身を除く): 14310406

約数列:

[1, 2, 11, 22, 43, 86, 121, 242, 473, 946, 1999, 3998, 5203, 10406, 21989, 43978, 85957, 171914, 241879, 483758, 945527, 1891054, 10400797, 20801594]

約数ペア:

[(1, 20801594), (2, 10400797), (11, 1891054), (22, 945527), (43, 483758), (86, 241879), (121, 171914), (242, 85957), (473, 43978), (946, 21989), (1999, 10406), (3998, 5203)]